Improvement in nut-fastenings



tnted geraten geen entre Letters Patent N0.1o8',882, dated october 18,1870.

IMPROVEMENT IN NUT-FASTENINC-S.

HOP-* The Schedule referred to 1n these Letters Patent and making partof the same.

To all whom it may concern.-

Be it known that I, FREDEnioK MYERS, of 'the city of New York, in thecounty and State of' New York, have invented a new and usefulImprovement in Nut-Fastener; and I do hereby declare that the followingis a full, clear, and exact description ofthe same, reference being hadto the accompanying drawing and to the letters of reference markedthereon, whereini Figure 1 is a perspective view of' the bolt andkeypiece.

Figure 2 is a perspective front view ofthe saine.

Figure 3 is a perspective view ofthe key-pieee.

My invention relates to the combination of a bolt and hey-piece in sucha manuel' that the said keypiece shall be capable of irlnly holding andlocking the nut, to prevent it from loosening from the bolt when the nuthas been rotated into the required position.

Ais a bolt, (littering onl\ from connnon bolts in having a portion ofone side made fiat, and having a square formed on the point ofthe serew.

l5 is the keypiece, provided with projections c e o e, and around hole,l); the said key-piece may be constructed of any suitable metal.

The hole Dis made' so as to screw down on the thread of the bolt.

The projections o e c e are constructed ot any length to suit the sizeof the nut. The nut having Abeen rotated'iuto the required position, thehey-piece down on the thread oi" the bolt,

B is then rotated until it cornes in contact with the nut, having one ofthe projections o c c c opposite the iiat side of the bolt A, oropposite the dat sides of the square formed on the point of the screw,both of which may be used.

The uut and key-piece having been rotatedinto the required position, oneof the projections o c c o,

being opposite the dat side of the bolt or square, is bent over, so thatthe point comes in Contact with the lat surface ot' the bolt, which.prevents the keypiece from turning, and the upper surface of the nutcoming in Contact with the key-piece, prevents the uut from turning,thus forming a complete lock to the nut. When it is desired to unscrewthe nut, or to take up any slack that may occur, the projection c,resting against the fiat surface of the4 bolt, is bent back, so as tofree the key-piece,- when the nut may be rotated to any requiredposition; and to loch it.,`beud it back as bet'ore.

Having thus fully described my invention,

What I claim, and desire to secure by Letters Patent, is-

rlihe key-piece B, provided with projections c e c C, the hole D, incombination with the bolt A, construeted andoperated substantiallvY asshown and specified.

. FREDERIC-K MYERS. 'itnesses z DANIEL F. MYERS, Gos. H. LEoNHanDr.

